Rotary cleaning-cylinder.



PATENTED FEB. 5, 1907'.

W. M. KRIOKBAUM. ROTARY CLEANING CYLINDER.

-APPLIOATIONTILBD JULY 31,1902.

UNITED sra'rns WILLIAM M. KRICKBAUM, OF CLEVELAND, OHIO, ASSIGNOR TO THEGRAS- r. TENT OFFICE.

OHIO.

ROTARY CLEANING-CYLINDER.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed July 31, 1902. Serial No. 117,872.

To a whom it may concern.-

Be it known that I, VVILLIAM M. Knicie BAUM, a citizen of the UnitedStates of America, and a resident of Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and usefulImprovements in Rotary Cleaning-Cylinders, (Case No. 1,) of which thefollowing is a specification.

My invention relates to improvements in rotary cleaning-cylindersforpyrite, coal, ores, &c., and has for its object the provision ofsimple and efficient means for acting upon and for cleaning continuouslyrelatively large quantities of coarse materials, such as those named.For example, pyrite or native iron disulfid in its natural state iscommonly found with adhering strata of foreign mate rial which must bechipped or broken off and separated therefrom in order that the pyritemay be employed in the arts.

The device of my invention is adn'iirably adapted for acting upon thisand other minerals, the same consisting,in brief, of a rotat- .ingcontaining-cylinder provided with a multitude .of interiorly disposedabrading or sharpened parts against which the mineral is repeatedlydashed by the rotation of said cylinder, perforations or screen-likeopenings in the shell of the said cylinder affording exit for thesmaller particles which are to be sifted out. Within this cylinder ordrum there are preferably mounted. a plurality of semipartitions orcarrying-aprons for raising themineral under treatment some distancebefore dropping it upon the sharpened parts. A driving-chain serves torotate the drum, which is supported in a substantially horizontalposition by means of carrying rolls or wheels, permitting its readyaxial rotation. The details both of construction and operation will bemore easily appreciated by refer ring to the accompanying drawings inconnection with the following portions of the specification, in whichdrawings Figure l is a side view of my improved device partially inelevation and partially broken away and in section, while Fig. 2 is anend view of the device in elevation, showing the feed or hopper. Fig. 3shows the device in vertical section, together with its drivingmechanism. Fig. 4 is merely a fragn'ientary View showing the preferredform of spike for insertion in the shell of the cylinder.

The same letter or character of reference is employed. therein todesignate similar parts.

At the left of the drum or cylinder a, which is formed of boiler-plateand provided with partial heads a a, riveted in at its, ends is shownthe feed or hopper b for containing the pyrite, ore, or other mineral tobe acted upon. Rigid encircling rails c rotatably support the cylinderupon the four flanged wheels (Z, while a central toothed rail 0 isengaged by the driving-chain f which passes over the sprocket-wheel fmounted on the drivingshaftf.

in order to secure sufficient flexibility in the driving mechanism andpermit the cylinder the necessary freedom or independence of movement, alaterally-disposed drivingwheel and shaft are employed connected withthe central toothed rail on said cylinder by a relatively longdriving-chain, which serves positively to rotate the cylinder with easeeven when angularly disposed with respect to the driving-shaft or atvarying distances therefrom.

Screwed into the shell of the cylinder are a large number of sharpspikes g, interiorly studding three sections of the said cylinder. Thesespikes are of conical form at their upper ends and terminate below inthreaded base portions which engage tapped holes in the cylinder.

Adjacent to the spike-studded sections are three inclined aprons orlongitudinal semipartitions ft, riveted to the shell of the cylinder inposition to carry the material within the drum by reason of its rotationfrom the bottom portion to the upper portion thereof, whence it fallsupon the series of sharp spikes then immediately below the same, therebyflaking or chipping off the foreign material from the pyrite undertreatment, or, if the drum be constructed of sufficiently largeproportions, breaking the containedminc'ral upon the spikes.

The flaked-off material or smaller particles will find exit from thedrum through the holes a, perforating the shell in correspondingsections or areas between the several sections of spikes and their(atrrying-aprons.

The cylinder or drum shown preferably is rotated upon its axis in aclockwise direction through the medium of the sprocket-wheel and d riving-chain. Su p porting-wl'leels (I carry the drum upon the rigid bands orrails c and feed or hopper at the left-hand end of said cylinder, whichin practice is slightly raised or blocked up to secure the desired falltoward the other or discharging end thereof. The said mineral issuccessively engaged by the aprons and carried to a position near thetop portion of the drum, from which it falls upon the sharp pointedspikes immediately beneath, thus chipping or breaking off por tionsthereof or the adhering foreign material, the mineral being again andagain carried up and dropped from the aprons until through the falltoward the right-hand end of the cyl inder it reaches a position fromwhich it can be shoveled or otherwise removed from the drum.

I/Vhile shifted about within the drum or cylinder the smaller particlesof the mineral fall through the openings in the shell. Also during thedrop from the aprons, these particles,-being of less weight, tend tofall upon the perforated. areas positioned in the rotating drum somewhatbeyond the breakingpoints or spikes, thereby assisting in sifting outthesame, which material collects beneath the drum, whence it may easily beremoved. Accordingly the screening areas preferably are situated beyondthe spikestudded portions and adjacent to the aprons, not only upon thisaccount, but in order to leave the shell of the cylinder stronger thanit otherwise would be were it drilled to provide the perforations forthe screen over the same areas tapped out to receive the spikes. IViththe screens positioned thus, too, the refuse is sifted out each timejust before the material is carried up in the succeeding apron.

By reason of the employment of a drivingchain the fall toward theright-hand end of the cylinder may be altered. and adjusted as requiredmerely by blocking up the supporting parts of the left-hand end in amanner it is not necessary to show without making a corresponding changein the driving mechanism, which feature is found to be of materialadvantage. The described manner of carrying the drum upon exteriorsupporting-wheels not only makes the interi or much more accessible, butis a more desirable mounting therefor than a shaft.

The spikes being rigidly secured in the shell near the periphery of thedrum afford a very effective means for flaking off or reducing thematerial to be treated and when dull or broken may very easily bereplaced.

It is self-evident that the position and an gle of the aprons, the sizeof the drum, and the disposition of its effective parts may be alteredas desired to effect the various operations of cleaning, separating,breaking, or otherwise treating minerals.

Having now described the preferred embodiment of my invention, I claimas new, and desire to secure by Letters Patent, the following:

1. In a rotary cleaning-cylinder, the com bination with therotatably-mounted drum wherein the treated material is acted upon, thesame being inclined as desired, of a plurality of spike-studded sectionstherein, cor responding carrying-aprons adapted to convey and direct thetreated material against the latter, screens or perforated areas forseparating out the refuse, means for supporting the drum rotatably, acentral toothed driving-rail, a stationarily-mounted drivingsprocket,and a driving-chain flexibly connecting the driving rail and sprocket,substantially as set forth.

2. In a device of the class described, the combination with a drum orcylinder wherein the material is acted upon, of supporting bands orrails encircling the same, supporting-wheels rotatably mounting thedrum, and flexible driving mechanism com rising a laterally-disposedgear-wheel, a toot ed driving-rail upon the cylinder and a loose andrelatively long driving-chain connecting the same for rotating said drumupon. its supporting-wheels, substantially as set forth.

3. In a device of the class described, the combination with arotatably-mounted metal shell or cylinder, of a plurality of sectionstherein studded with sharpened parts, a plurality of carrying parts oraprons adapted to convey and direct the treated material against thesame, and a screen or perforated section provided in said drum orcylinder, beyond each of the studded sections, and immediately beforethe carrying-aprons, for separating out the smaller particles of thetreated. material, as broken therefrom, substantially as set forth.

4. In a device of the class described, the combination with arotatably-mounted drum wherein the material is acted upon, of aplurality of spike-studded sections therein, correspondingcarrying-aprons adapted to convey and direct the treated materialagainst the same, and corresponding screens or perforated sectionsextending over different displaced areas, for separating out the smallerparticles of the treated material, substanti ally as set forth.

5. In a device of the class described, the

combination with a drum wherein the mate-.

rial is acted upon, the same being inclined from end to end as desired,of a plurality of sharpened parts disposed therein, means comprising aconveying-apron for directing the material against the same, a screen orperforated section for separating the smaller particles,supporting-wheels rotatably mounting the drum, and flexible drivingmechanism comprising a laterally-disposed gear-wheel, a tootheddriving-rail upon the cylinder and a loose and relatively longdriving-chain connecting the same for rotating said druni uponing-wheels engaging the same and rotatably the wheels, substantially asset forth. mounting said drum, and lleXible driving 6. In a device ofthe class described, the mechanism for rotating the drum upon said 15combination with a rotatably-inounted druni wheels, substantially as setforth. or cylinder wherein the treated material is Signed at Cleveland,Ohio, this 24th day of acted upon, of a plurality of spike-studded July,1902, in the presence of two subscribing sections within the drum,corresponding carwitnesses. rying-aprons adapted to convey and directWILLIAM M. KRIUKIMXUM the treated material against the same, screens orperforated sections for separating out the \Vitnesses: smaller particlesof said material, supporting 'l. J. Ross, bands or rails encircling thedrum, support- Ailnnn'r LYNN LAWRENCE.

